mirror of
git://git.code.sf.net/p/cdesktopenv/code
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68 lines
1.9 KiB
C++
68 lines
1.9 KiB
C++
/*
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* CDE - Common Desktop Environment
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*
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* Copyright (c) 1993-2012, The Open Group. All rights reserved.
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*
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* These libraries and programs are free software; you can
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* redistribute them and/or modify them under the terms of the GNU
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* Lesser General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* These libraries and programs are distributed in the hope that
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* they will be useful, but WITHOUT ANY WARRANTY; without even the
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* implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU Lesser General Public License for more
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* details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with these libraries and programs; if not, write
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* to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
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* Floor, Boston, MA 02110-1301 USA
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*/
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/* $XConsortium: RewindStorageObject.h /main/1 1996/07/29 17:03:03 cde-hp $ */
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#ifndef RewindStorageObject_INCLUDED
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#define RewindStorageObject_INCLUDED 1
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#include "StorageManager.h"
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#include "Boolean.h"
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#include "StringOf.h"
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#ifdef SP_NAMESPACE
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namespace SP_NAMESPACE {
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#endif
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class Messenger;
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class SP_API RewindStorageObject : public StorageObject {
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public:
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RewindStorageObject(Boolean mayRewind, Boolean canSeek);
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protected:
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PackedBoolean mayRewind_;
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void saveBytes(const char *, size_t);
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Boolean readSaved(char *, size_t, size_t &);
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Boolean rewind(Messenger &);
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void willNotRewind();
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void unread(const char *s, size_t n);
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virtual Boolean seekToStart(Messenger &) = 0;
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private:
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PackedBoolean savingBytes_;
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PackedBoolean readingSaved_;
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PackedBoolean canSeek_;
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String<char> savedBytes_;
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size_t nBytesRead_;
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};
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inline
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void RewindStorageObject::saveBytes(const char *s, size_t n)
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{
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if (savingBytes_)
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savedBytes_.append(s, n);
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}
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#ifdef SP_NAMESPACE
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}
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#endif
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#endif /* not RewindStorageObject_INCLUDED */
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